Hi d4ry1,
Is the encryption getting paused and starting back again or it is stopped.
If the encryption process doesn't resume from the PGP desktop interface.Try the following steps:-
Open the command line interface and go to :
C:\Program Files\PGP Corporation\PGP Desktop\ (for 32 bit)
C:\Program Files (x86)\PGP Corporation\PGP Desktop\ (for 64 bit)
1. Check the Status of a Disk
pgpwde --disk-status --disk 0
2. Try to encrypt the disk manually
pgpwde --encrypt --passphrase <passphrase> --disk 0